The communist country has said that Jang Song Thaek, who for years was a mentor to the young leader, was accused of leading a “dissolute and depraved life,” and had committed crimes including gambling, drug use, womanizing and corruption.

The Washington Post reported North Korea stated Jang was a “despicable human scum,” who was “worse than a dog,” and that he confessed to his crimes in front of a military Tribunal on Thursday.

The state news agency KCNA said his crimes also included “attempting to overthrow the state by all sorts of intrigues and despicable methods with a wild ambition to grab the supreme power of our party and state.”

Jang was married to Kim Kyong Hui, the younger sister of Kim Jong Un’s father.

There have been a series of executions in the country recently, including Kim Jong Un’s ex-girlfriend and 11 others in front of a firing squad.